Hello,
I'm 17 and I invited my best friend to watch a movie with me in my bedroom so in the middle of the film she started to hug me, but I didn't care, because she's my best friend and some times we hug each other, it's not a problem for us. So she started to look at me in a different way, like, REALLY different way and then she gave me a small kiss on my lips, I didn't say anything and she just turn around and we act like nothing has happened. But this was just my first problem because then she started to give me small kiss all the time and this was really weird for me because I liked and she has a boyfriend and we never talked about the kisses. Now I'm confused because I have kissed boys before and they never turn me on like her. So am I lesbian or bi? I'm really confused, and she's the only girl who I feel attraction.

You are sexually curious. So is she for that matter. Don't label yourself.
She has a boyfriend though, leave her alone. Don't allow her to pull you into her confusion. Ask her why she is doing this and tell her to stop.

Being gay is having a physical and emotional attraction to,being curious doesn't make you gay though might be.I'ts all in time you will figure it out.Don't label yourself just yet,also talk to your friend and discuss the 'little kisses' to find out what they mean to her and you.

Hope that helped